A three-position selective door lock structure

Abstract

The utility model relates to electrical equipment technical field discloses a door lock structure of three gear position selection, including door lock mechanism, the door lock mechanism includes door lock lock head, handle, lock core, door lock support, the lock core is located the inboard of door lock lock head, the door lock lock head side wall is provided with the slot hole, the handle is located the outside of door lock lock head, and handle one end penetrates the slot hole and is connected with the lock core, the door lock support sets up in the lower extreme of door lock lock head, and the door lock support sets up in the outside of lock core, the utility model discloses handle penetrates the door lock lock head and connects the lock core with the slot hole of equidistance gear slot and intercommunication groove, realizes the lock core three gears stable switching, solves the traditional two gear positions door lock protection problem of not enough, and the door lock support is welded together by top plate, stainless steel ring, bottom plate, and is matched with corresponding mounting hole and welding parts, guarantees the stable structure and realizes accurate adaptation with ring main unit, solves the existing three gear positions door lock adaptation problem, guarantees ring main unit safety and power supply system demand.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a door lock structure with three position selection. Background Technology

[0002] With the rapid development of the market economy, high-rise buildings and large public buildings continue to emerge in cities, and urban functions are becoming increasingly sophisticated and complex. The demands for power supply reliability in social production and daily life are constantly rising, and many users have explicitly requested power supplies from two or more sources. Against this backdrop, ring main units (RMMs), with their crucial role in distribution network line switching, fault isolation, and load control, can effectively ensure the stable operation of multi-source power supply systems. Therefore, they are widely used in modern power supply networks and have become an indispensable core switching device in the distribution network field.

[0003] Currently, most ring main units on the market are equipped with a two-position door lock structure. However, with the increasing demands for power equipment safety performance in some regions, the need for three-position door locks is gradually emerging to further ensure the reliability and safety of ring main unit operation. However, existing three-position door lock products on the market are insufficient to meet the special usage requirements of ring main units in terms of structural design and adaptability. They suffer from functional mismatches and inability to adapt to the working environment of the ring main unit, resulting in insufficient protection of the ring main unit's safety performance. Therefore, developing a three-position selectable door lock structure specifically adapted to ring main units is particularly necessary. Utility Model Content

[0004] Given that the existing three-position door locks cannot meet the special usage requirements of ring main units in terms of structural design and adaptability, and have problems such as functional mismatch and difficulty in adapting to their working environment, and cannot fully guarantee the safety protection performance of the ring main unit, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a door lock structure with three position selection, including a door lock mechanism, the door lock mechanism including a door lock head, a handle, a lock cylinder, and a door lock bracket, the lock cylinder being located inside the door lock head, the side wall of the door lock head having a slot, the handle being located outside the door lock head, and one end of the handle passing through the slot and connecting to the lock cylinder, the door lock bracket being disposed at the lower end of the door lock head, and the door lock bracket being sleeved on the outside of the lock cylinder.

[0006] As a preferred embodiment, the handle, lock cylinder, and lock core are welded together.

[0007] As a preferred embodiment, the door lock mechanism is provided with symmetrical connection holes at the bottom.

[0008] As a preferred embodiment, the door lock bracket includes a top plate, a stainless steel ring, and a bottom plate. The stainless steel ring is disposed between the top plate and the bottom plate, and both ends of the stainless steel ring are fixedly connected to the top plate and the bottom plate, respectively. The top plate has symmetrical mounting holes 2 on its top, and the bottom plate has a plurality of mounting holes 1 distributed in a rectangular pattern on its top.

[0009] As a preferred embodiment, the two ends of the stainless steel ring are welded to the top plate and the bottom plate respectively, and the second mounting hole corresponds to the connecting hole.

[0010] As a preferred embodiment, the slot includes a gear slot and a connecting slot, and there are a plurality of gear slots and connecting slots. The plurality of gear slots are equidistantly distributed, and the connecting slots are located between adjacent gear slots.

[0011] As a preferred embodiment, the lock cylinder has symmetrically formed flat grooves at the end away from the handle.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This utility model connects the handle to the lock cylinder through a slot in the lock head of the door lock mechanism. The slot includes several equally spaced position slots and connecting slots between adjacent position slots, which enables the handle to drive the lock cylinder to stably switch between three positions. This solves the problem of insufficient protection of traditional two-position door locks in ring main units, meets the high requirements for the safety performance of power equipment in some areas, further ensures the reliability and safety of ring main unit operation, and adapts to the safety requirements of modern power supply systems for this core switchgear.

[0013] 2. The door lock bracket of this utility model is welded together from a top plate, a stainless steel ring, and a bottom plate. The mounting holes 2 on the top plate correspond to the connecting holes at the bottom of the door lock mechanism. The bottom plate has several mounting holes 1 distributed in a rectangular shape. At the same time, the handle, door lock head, and lock cylinder are welded together for installation. This not only ensures the overall stability of the door lock structure, but also enables precise matching and installation with the ring main unit through mounting holes 2, connecting holes, and mounting holes 1. This solves the problem that existing three-position door locks on the market are incompatible with the structural design of the ring main unit and cannot be adapted to its working environment, ensuring that the safety protection performance of the ring main unit is fully utilized. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the handle of this utility model located in the left position; Figure 3 This is a schematic diagram of the structure of the handle of this utility model located in the middle position; Figure 4 This is a schematic diagram of the structure of the handle of this utility model located in the right stop position; Figure 5This is an exploded structural diagram of the door lock head and door lock bracket of this utility model. Figure 6 This is a schematic diagram of the bottom structure of the door lock head of this utility model; Figure 7 This is a schematic diagram of the structure of the door lock bracket of this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Door lock mechanism; 2. Door lock cylinder; 3. Handle; 4. Lock cylinder; 5. Door lock bracket; 6. Slot; 7. Flat slot; 8. Top plate; 9. Stainless steel ring; 10. Base plate; 11. Connecting hole; 12. Mounting hole two; 13. Mounting hole one; 14. Gear slot; 15. Connecting slot. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Reference Figure 1 - Figure 7 As shown, a door lock structure with three position selection is provided, including a door lock mechanism 1. The door lock mechanism 1 includes a door lock head 2, a handle 3, a lock cylinder 4, and a door lock bracket 5. The lock cylinder 4 is located inside the door lock head 2, and a slot 6 is opened on the side wall of the door lock head 2. The handle 3 is located outside the door lock head 2, and one end of the handle 3 passes through the slot 6 and is connected to the lock cylinder 4. The door lock bracket 5 is set at the lower end of the door lock head 2 and is sleeved on the outside of the lock cylinder 4. The handle 3 can drive the lock cylinder 4 to move stably under the limitation of the slot 6, laying the structural foundation for subsequent three-position switching, adapting to the ring main unit's need for multi-position protection, and solving the problem of insufficient protection of traditional two-position door locks.

[0018] In this example, the handle 3, the lock cylinder 2, and the lock core 4 are welded together. The welding connection method can enhance the connection stability of the handle 3, the lock cylinder 2, and the lock core 4, and avoid the situation where the gear switching fails due to loose parts during use. This further ensures the reliable operation of the ring main unit door lock and meets the safety performance requirements of power equipment.

[0019] In this example, the bottom of the door lock mechanism 1 is symmetrically provided with connecting holes 11; the symmetrically provided connecting holes 11 can precisely correspond to the mounting holes 12 of the door lock bracket 5, providing a positioning reference for the assembly of the door lock mechanism 1 and the door lock bracket 5, ensuring that the installation positions of the two are accurate, improving the assembly accuracy of the overall door lock structure, and facilitating subsequent adaptation and installation with the ring main unit.

[0020] In this example, the door lock bracket 5 includes a top plate 8, a stainless steel ring 9, and a bottom plate 10. The stainless steel ring 9 is positioned between the top plate 8 and the bottom plate 10, and both ends of the stainless steel ring 9 are fixedly connected to the top plate 8 and the bottom plate 10, respectively. The top plate 8 has symmetrical mounting holes 12 on its top, and the bottom plate 10 has a number of rectangular mounting holes 13 on its top. The door lock bracket 5 structure formed by the top plate 8, the stainless steel ring 9, and the bottom plate 10 can provide stable support for the lock cylinder 4 and can be connected to the door lock mechanism 1 and the ring main unit through the mounting holes 12 and 13, respectively. The rectangular mounting holes 13 can be adapted to different installation positions of the ring main unit, solving the problem of poor compatibility between existing door locks and ring main units.

[0021] In this example, the two ends of the stainless steel ring 9 are welded to the top plate 8 and the bottom plate 10 respectively, and the mounting hole 12 corresponds to the connecting hole 11. The welding connection between the stainless steel ring 9 and the top plate 8 and the bottom plate 10 can enhance the structural strength of the door lock bracket 5 and extend the service life of the door lock. The correspondence between the mounting hole 12 and the connecting hole 11 can ensure that the door lock mechanism 1 and the door lock bracket 5 are quickly and accurately assembled, improve the assembly efficiency, and at the same time ensure the stability of the overall structure of the door lock and ensure the safety protection performance of the ring main unit.

[0022] In this example, the slot 6 includes a gear slot 14 and a connecting slot 15. There are several gear slots 14 and several connecting slots 15. The gear slots 14 are equidistantly distributed, and the connecting slots 15 are located between adjacent gear slots 14. The equidistantly distributed gear slots 14 can achieve clear positioning of the three gear positions of the door lock, while the connecting slots 15 facilitate the switching of the handle 3 between different gear slots 14, ensuring smooth gear switching, solving the problem of ambiguous gear positions and inconvenient switching in traditional door locks, meeting the requirements of ring main units for precise control of multiple gear positions of the door lock, and improving the safety and convenience of use.

[0023] In this example, the lock cylinder 4 has symmetrically arranged flat grooves 7 at the end away from the handle 3; the symmetrically arranged flat grooves 7 can enhance the compatibility between the lock cylinder 4 and the lock structure of the ring main unit door, ensure that the lock cylinder 4 can stably drive the door locking component when rotating, avoid slippage or drive failure, further ensure the locking reliability of the ring main unit door lock, and improve the overall safety protection performance of the ring main unit.

[0024] During use, the structural assembly and basic positioning are as follows: First, the lock cylinder 4 is placed inside the door lock head 2, so that one end of the handle 3 passes through the slot 6 on the side wall of the door lock head 2 and connects with the lock cylinder 4. Then, the handle 3, door lock head 2 and lock cylinder 4 are fixed by welding to ensure that the connection between the three is stable and to avoid loose parts affecting gear switching. Then, the door lock bracket 5 is sleeved on the outside of the lock cylinder 4 and placed at the lower end of the door lock head 2. The symmetrical connecting holes 11 at the bottom of the door lock mechanism 1 are precisely aligned with the symmetrical mounting holes 12 on the top plate 8 of the door lock bracket 5 to complete the assembly of the door lock mechanism 1 and the door lock bracket 5. At the same time, the welding structure of the top plate 8, stainless steel ring 9 and bottom plate 10 in the door lock bracket 5 provides stable support for the lock cylinder 4 and lays the foundation for subsequent connection with the ring main unit.

[0025] Three-position switching and locking control: When it is necessary to switch the door lock position, operate the handle 3 located outside the door lock head 2. The handle 3 moves under the limit of the slot 6. Several equally spaced position slots 14 in the slot 6 achieve clear positioning of the three positions, and the connecting slots 15 between adjacent position slots 14 facilitate smooth switching of the handle 3. When the handle 3 moves, it drives the lock cylinder 4 connected to it to rotate synchronously. The flat slots 7 symmetrically opened at the end of the lock cylinder 4 away from the handle 3 are adapted to the lock structure of the ring main unit door. As the lock cylinder 4 rotates in different positions, the flat slots 7 drive the lock components of the ring main unit door to achieve different states of locking or unlocking, thereby completing the switching and control of the three positions and meeting the safety requirements of the ring main unit for multi-position protection. In addition, several rectangular mounting holes 13 on the base plate 10 of the door lock bracket 5 can achieve precise adaptation and installation of the door lock and the ring main unit, ensuring that the door lock operates stably in the working environment of the ring main unit and fully exerts its safety protection function.

[0026] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A door lock structure with three position selection, comprising a door lock mechanism (1), characterized in that: The door lock mechanism (1) includes a door lock head (2), a handle (3), a lock cylinder (4), and a door lock bracket (5). The lock cylinder (4) is located inside the door lock head (2). The side wall of the door lock head (2) has a slot (6). The handle (3) is located outside the door lock head (2), and one end of the handle (3) passes through the slot (6) and is connected to the lock cylinder (4). The door lock bracket (5) is located at the lower end of the door lock head (2) and is sleeved on the outside of the lock cylinder (4).

2. The door lock structure with three position selection according to claim 1, characterized in that: The handle (3), door lock head (2), and lock cylinder (4) are welded together and installed.

3. The door lock structure with three position selection according to claim 2, characterized in that: The door lock mechanism (1) has symmetrical connecting holes (11) at its bottom.

4. The door lock structure with three position selection according to claim 3, characterized in that: The door lock bracket (5) includes a top plate (8), a stainless steel ring (9), and a bottom plate (10). The stainless steel ring (9) is located between the top plate (8) and the bottom plate (10), and both ends of the stainless steel ring (9) are fixedly connected to the top plate (8) and the bottom plate (10) respectively. The top plate (8) has symmetrical mounting holes 2 (12) on its top, and the bottom plate (10) has a plurality of mounting holes 1 (13) distributed in a rectangular pattern on its top.

5. The door lock structure with three position selection according to claim 4, characterized in that: The stainless steel ring (9) is welded to the top plate (8) and the bottom plate (10) at both ends, and the mounting hole (12) corresponds to the connecting hole (11).

6. The door lock structure with three position selection according to claim 2, characterized in that: The slot (6) includes a gear slot (14) and a connecting slot (15). There are several gear slots (14) and several connecting slots (15). The gear slots (14) are equidistantly distributed, and the connecting slots (15) are located between adjacent gear slots (14).

7. A door lock structure with three position selection according to claim 6, characterized in that: The lock cylinder (4) has symmetrical flat grooves (7) on one end away from the handle (3).

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